Desc :https://www.futureelectronics.com/resources/featured-products/panasonic-evp-ay-evp-bb-evp-ak-light-touch-switches. Panasonic's EVP-BB Series Light Touch Switches feature a compact size, one of the smallest in the world with an IP67 rating. Featuring a laser-welded design, Panasonic has been able to provide a high level of ingress protection. The laser-welded design also helps to prevent actuator peel-off in the case of side-load or impact. https://youtu.be/FWJt0uHURFo